USMCA/T-MEC certification of origin: when it is used and who signs

USMCA chapter 4 defines originating goods through production and product-specific criteria, rather than a seller's address.

Official reference: USTR: USMCA chapter 4, origin rules ↗

Write down where the goods were manufactured, where you bought them and where they will be picked up. Keep those facts in separate parts of your shipment brief. If the supplier sells products made in different places, organize origin information by model or product line. Ask who can explain the manufacturing history. A commercial invoice from a US business does not by itself answer the production question. Avoid asking for a certificate first and then trying to find facts that fit it. Start with the actual goods and evidence available.

Prepare the technical description, composition, function and any classification already used by the supplier. Ask the customs broker to review the classification and the origin rule relevant to that product. Explain whether the transaction involves a finished article, a part or materials for further production. The same supplier may offer items with different manufacturing arrangements, so do not combine them into a single undocumented claim. Keep the product description on the proposed certification consistent with the goods in the shipment. If a model has changed, tell the specialist what changed and ask what supporting information should be refreshed before relying on earlier records.

USMCA chapter 5 provides for certification by an importer, exporter or producer, subject to its requirements.

Official reference: USTR: USMCA chapter 5, certification procedures ↗

Ask which party has access to the information supporting the claim and who will take responsibility for the certification. A warehouse contact may know where a pallet is stored without knowing how its contents were produced. A purchasing contact may need to involve the manufacturer. Keep those responsibilities clear before requesting a signature. Do not complete a form on another person's behalf with facts they have not confirmed. Ask the customs professional to review the proposed certifier's role and the available evidence for your transaction, including any gaps that need a supplier or producer response.

Chapter 5 does not prescribe a single certification format; Annex 5-A sets minimum data elements, including certifier, product, origin criterion and certification details.

Official reference: USTR: USMCA chapter 5, certification procedures ↗

Ask the specialist to compare the proposed document with those elements and the actual shipment. Your supplier's layout may look different from another company's without that being the main issue. Focus on clear product identification, the basis of the claim and the party providing it. Keep a readable copy and explain any abbreviations in the supporting product file. If the document covers several products, make the relationship between its descriptions and your invoice lines easy to follow. Do not use an unsigned draft as if it were the completed certification.

Ask the certifying party which records support its origin conclusion. Depending on the product discussion, useful review material may include manufacturing descriptions, material information and records supplied by the producer. Explain what information your company actually holds and what remains with the supplier. Keep sensitive business records for the appropriate professional follow-up instead of entering them into a public quote request. If the supplier answers only that the goods came from a US warehouse, return to the manufacturing question. A useful origin discussion shows the basis of the conclusion and the responsible contact, rather than relying on the appearance of a signed document.

Read the proposed certification alongside the purchase and shipment records. Ask whether it is intended for a single movement or a set of covered shipments, and whether the models you are buying are included. Check for changes in producer, specifications or sourcing that could make an older statement unsuitable for review. Keep the certification version tied to the goods discussed with the specialist. If your business imports repeatedly, assign someone to request refreshed information when purchasing changes. Do not treat a supplier relationship as a permanent origin conclusion. The product facts should remain visible even when the commercial process feels routine.

USTR's July 2026 joint-review statement said the agreement remained in force while issues were being resolved.

Official reference: USTR: July 2026 joint-review statement ↗

Keep track of dated official updates through the rules page, and distinguish a review announcement from a decision about your particular goods. Ask the customs professional which publication affects the transaction you are planning. A public discussion about the agreement does not replace the product and origin review. Avoid forwarding a headline to the carrier as evidence that a shipment qualifies. Keep the proposed filing date, manufacturing information and certification in the same review file so the specialist can address the current transaction rather than a general trade-policy question.

Make a list of unresolved points: missing product information, an uncertain producer, inconsistent descriptions or an unclear certifier role. Give each question to the party able to answer it. Ask the customs broker what needs review before the proposed treatment is used in the filing. If evidence is unavailable, say so; do not substitute a guessed country or a borrowed certificate from another product. Keep the specialist's explanation with the file, including why further information was requested. For your quote request, describe the goods, manufacturing country and origin-document question. The form begins a review and does not certify the goods or determine the treatment.